Stove or range



No. 625,7I0.

Y n; s. STEPHENSON.

STOVE 0B RANGE,

(Application filed Dec. 20, 1898.)

Patented 23, I899.

(N0 Mudel.)

NITED STATES PATENT OFFICE.

ROBERT S. STEPHENSON, OF ALLEGHENY, PENNSYLVANIA, ASSIGNOR OF ONE-HALFTO JOHN S/GRAHAM, OF SAME PLACE, AND SAMUEL R. BALDVIN, OF N ENV'CASTLE, PENNSYLVANIA.

STOVE OR RANGE.

SPECIFICATION forming part of Letters Patent No. 625,710, dated May 23,1899. Application filed December 20,1898. Serial No. 699,796. (Nomodel.)

To all whom it may concern:

Beit known that I, ROBERT S. STEPHENSON, a citizen of the United States,residing at Allegheny, in the county of Allegheny andState ofPennsylvania, have invented a certain new and useful Improvement inStoves or Ranges, of which the following is a specification.

My invention relates to stoves and ranges, and has especial reference tothe back-flue boxes of gas stoves and ranges. Heretofore in the use ofthese gas stoves and ranges when only one burner, for instance, was inuse the suction of the draft of such burner would act to draw cold airfrom the portions of the stove not in use, which cold-air draft-smeeting the heated products of combustion coming from the burner in usewould tend to destroy the draft of such burner and cause a part of theproducts to pass out into the apartment. rences rendered less efficient.in its heating properties.

The object of my invention is to obviate these difficulties and toprovide a gas stove or range in which the draft of the gaseous vapors orproducts of combustion from a burner or burners in use will not be sohindered or retarded by the currents or drafts of cold air sucked fromthe portions of the stove not in use as to cause the evil effects abovedescribed. Y

My invention consists, generally stated, in the novel arrangement,construction, and combination of parts, as hereinafter more specificallyset forth and described, and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains toconstruct and use my improved stove or range, I will describe the samemore fully, referring to the accompanying drawings, in which Figure 1 isa vertical central section of a stove or range, showing my inventionapplied thereto. Fig. 2 is a section thereof on the line .2 2, Fig. 1.Fig. 3 is a detail cross-section on the line 00 as, Fig. 2. Fig. 4 is anen larged plan view of the back-flue'box and a The stove was also bysuch occur-.

- therein.

portion of the stove or range, and Fig. 5 is a rear view of theback-flue box.

Like numerals herein indicate like parts in each of the figures of thedrawings.

The gas stove or range is shown at 1 and is provided with the mainheating or combustion chamber 2, formed in the top thereof, within whichare located the gas-burners 3, of any suitable construction and suppliedwith gas in any desired manner. Located adjacent to the maincombustion-chamber 2 and separated therefrom by the partition-wall 4 isthe water-heating or auxiliary combustionchamber 4, within which arelocated the water-heating pipes 4", connected to a suitable boiler, (notshown,) and thegas-burners 5.

The chambers 2 and 4 are closed by the top or cover 6, within which areprovided the holes 7 for holding the lids 7 therein. Below thecombustion-chamber 2 is the bake-oven 8, which is supported on aspider-plate 8, se-

cured within the stove or range 1, flues 8 being formed around the same.The plate 8 supports gas-burners 9 below the same in the upper part of abroiler-oven 9, located below the baker-oven 8 in the stove or range 1,and these gas-burners 9 are of any suitable construotion adapted to besupplied with gas and connected to supply-pipes in any desired manner.Located at one side of the stove or range 1 is the back-flue box 10,which is formed by a hollow plate 10', secured to the stove or range inany suitable manner. A draft or escape pipe 10 fits over and around anoval portion 10" on the top of the hollow plate 10 for the passage ofthe products of combustion from the chambers 2 and 4 and ovens 8 and 9to the chimney and open air. The back-flue box 10 is provided with thedivision walls or plates 11 therein, which form the central flue 12 andside fines 12' and 12 The central flue 12 extends down at 13 andconnects by 'a passageway 14, formed under the chamber 2, with the fiues8 around the baker-oven S, and the side flue 12 connects by apassage-way 15, formed under the cover 6 and leads from the heating orcomas desired.

bustion chamber 2-. The side fl-ue 12 connects with a passage-way 16,.formed under the cover 6, which leads from the Water-heating orauxiliary combustion-chamber 4 to the flue-box 10.

The operation of my improved SllOVG or range is as follows: When theburners 3 within the heating-chamber 2 are used, the prod- I nets ofcombustion pass therefrom into the chamber 2 to heat the articles uponthe lid or cover 6, and the waste gases or products of combustion thenpass through the passage way 15 into the side flue 12 of the back-fluebox 10 and escapeinto the chimney or open air through the draft orescape pipe 10". When the gas burners 5 within the auxiliaryheating-chamber 4 are used, the heating-gases pass therefrom into thechamber 4 to heat the objects or articles upon the cover or lid 6 aswell as the water-heating pipes 4 and are then allowed to pass throughthe passageway 16, leading from the chamber 4 into the side flue 12 ofthe back-flue box 10, where 3 they escape through the draft-pipe '10"into the chimney or open air. In case only the: baker-oven 8 orbroiler-oven 9 is used thegas-burners 9 within the oven 9 will permit 3the gases or products of combustion to pass I therefrom up through theopenings in the spider-plate 8 and through the fines 8"aro1ind thebaker-oven 8 to heat or broil the articles within the oven 9 and heat orbake the ar-i ticles within the oven 8, after which the gases orproducts of combustion pass from the lines 8" and enter the passage-way14, leading from the oven 8 into the central flue 12 of the back-fluebox 10 and escape through the escape-pipe 10 into the chimney or openair, It is evident that either one of the c ombustion-chambers 2 and 4or the ovens 8 and 9 can be used as well as both the charm bers 2 and 4,and ovens 8 and 9 can be used when desired and still allow the practicaloperation of the back-flue box 10.

It will be apparent that in the use of my improved stove or range theconstruction of the back-flue box will permit the operation of any orall parts of the stove or range, as desired, and will prevent the draftof cold air throughthe idle parts interfering with the free draft andexit into the chimney of the gases from the part or parts in use.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A stove or range having two or more burners or burner-chambers and aseparate flue leading from each of said burners or burner-chambers,incombination with a backfiue box divided into separate compartments,there being a compart'mentin said box for each of said flues andcommunicting therewith. I 2. A stove or range having two or more burnersor burner-chambers and a separate flue leading from each of said burnersor burner-chambers in combination with a backflue box divided intoseparate compartments by vertical partition-walls extending to about thelevel of the top of the stove, there being a compartment in said box foreach of said fines and communicating therewith.

In testimony whereof I have hereunto set my hand, at Pittsburg, in thec'ounty of Allegheny and State of Pennsylvania, this 10th day ofDecember, A. D. 1898.

ROBERT S. STEPHENSON.

\Vitnesses:

J NO. 0. BASH, J. N. CooKE.

